How to configure FortiGate for VLANs and Inter-VLAN Routing.

To configure VLANs in FortiGate, follow these steps:

1. Log in to the FortiGate web interface using your administrator credentials.
2. Navigate to the “Network” menu and select “Interfaces.”
3. Click on “Create New” to create a new interface.
4. Select “VLAN Interface” as the interface type.
5. Enter a name for the VLAN interface in the “Name” field.
6. In the “VLAN ID” field, enter the VLAN ID you want to use for this interface.
7. Choose the appropriate physical interface that will be used for this VLAN under the “Physical Interface” dropdown menu.
8. Configure the IP address, and subnet mask for the VLAN interface.
9. Click on “OK” to save the configuration.
10. Repeat these steps to create additional VLANs, if necessary.

After creating VLANs, you will need to assign them to firewall policies to allow or deny traffic between the VLANs and other interfaces on the FortiGate. To do this, follow these steps:

1. Navigate to the “Policy & Objects” menu and select “IPv4 Policy.”
2. Click on “Create New” to create a new policy.
3. In the “Source Interface” field, select the VLAN interface that you want to use as the source for the traffic.
4. In the “Destination Interface” field, select the interface or VLAN that will be the destination for the traffic.
5. Configure the policy with the appropriate actions, such as allowing or denying traffic, and specify any other necessary options.
6. Click on “OK” to save the policy.
7. Once you have configured your VLANs and firewall policies, you should be able to route traffic between them and other interfaces on the FortiGate as needed. To become a Fortigate Subject Matter expert, visit https://rakshitvidyarthi.com/
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